Abstract: A layer-by-layer stabilization strategy was employed to immobilize active tungstophosphoric acid onto pentaethylenehexamine-preloaded ZrSBA-15. The synthesized materials were characterized by XRD, N2 adsorption-desorpton isotherms, FT-IR and TEM, etc. Utilizing hydrogen peroxide as oxidant, the composite exhibited favorable performance toward the deep oxidation desulfurization of dibenzothiophene;and it could be reused at least six runs without discernible decrease in activity.

Key words: oxidization desulfurization;heteropolyacids;catalysis;SBA-15